cmogni1
They make comparisons to FlashAttention-2 when FlashAttention-4 has been out (even if they wanted to stick to Hopper class GPUs for whatever reason there's still FlashAttention-3). The two orders of magnitude claim look like they're for prefill not next-token decoding, which is a bit duplicitous. Long context extrapolation experiments typically go well beyond 2x context length. Etc etc etc.
I never said they should have a full public disclosure, but I do think sharing something of substance helps build trust and also get people excited.
Lastly, frontier labs have other incentives than to eek out every dollar and cent. Having the most capable models, not the most cost effective, is of significantly higher priority as OpenAI and Anthropic march towards IPOs. The same is not necessarily true for Google/DeepMind, and one can see from their public releases alone for some of their open weight models that this may be more of a priority for them today.
Because the cost to OpenAI to make an architectural shift is far greater than the cost to a new lab to try something different, providing details is usually a net benefit for recruiting, building trust, getting acquired, etc. The lack of details is a poor business decision because it makes them seem untrustworthy.
I'm not advocating that they should open source their model, but there is already so much noise in the space and many bad papers that being cagey is a poor strategy for winning over talent, developers, etc.
Kimi K2.7 Code
DashAttention: Differentiable and Adaptable Sparse Hierarchical Attention
Anthropic is proof that SaaS isn't dead
Raven: Memory as a Set of Slots
The Ballad of Dario and Pete
Supabase CEO on the "painful" decisions that built a $5B company
GTM Engineering Has a Context Problem
Towards Logic: The Language of AI
The Future (and Present) of AI Is Synthetic Data
In Defense of the Amyloid Hypothesis
OpenAI Seeks Additional Capital from Its Investors as Part of Its $40B Round
One addition: the O(n^2) compute cost is most acute during the one-time prefill of the input prompt. I think the real bottleneck, however, is the KV cache during the decode phase.
For each new token generated, the model must access the intermediate state of all previous tokens. This state is held in the KV Cache, which grows linearly with sequence length and consumes an enormous amount of expensive GPU VRAM. The speed of generating a response is therefore more limited by memory bandwidth.
Viewed this way, Google's 2x price hike on input tokens is probably related to the KV Cache, which supports the article’s “workload shape” hypothesis. A long input prompt creates a huge memory footprint that must be held for the entire generation, even if the output is short.
No Need for Speed: Why Batch LLM Inference Is Often the Smarter Choice
It seems like an inevitable outcome of this is elaborate system-gaming to mitigate how much employees fall under S174…
Workhorse LLMs: Why Open Source Models Dominate Closed Source for Batch Tasks
System Prompts and Models of AI Tools
I've built a lot of LLM applications with web browsing in it. Allow/block lists are easy to implement with most web search APIs, but multi-hop gets really hairy (and expensive) to do well because it usually requires context from the URLs themselves.
The thing I'm still not seeing here that makes LLM web browsing particularly difficult is the mismatch between search result relevance vs LLM relevance. Getting a diverse list of links is great when searching Google because there is less context per query, but what I really need from an out-of-the-box LLM web browsing API is reranking based on the richer context provided by a message thread/prompt.
For example, writing an article about the side effects of Accutane should err on the side of pulling in research articles first for higher quality information and not blog posts.
It's possible to do this reranking decently well with LLMs (I do it in my "agents" that I've written), but I haven't seen this highlighted from anyone thus far, including in this announcement.